Superior vena eava obstruction

• 上腔静脉阻塞

Superior vena eava obstruction的用法和样例：

例句

1. If superior vena caval obstruction lies above the azygosvein, it acts as a bypass collateral to the right atrium.
   如果上腔静脉阻塞位于奇静脉之上，奇静脉就成为一条通入右心房的旁路侧支循环。